switching to electron ID tools now integrated into 5_3_X releases
added support for Pythia8 status codes
fixed track-vertex association
minor code cleanup with no new functionality introduced
added info for all tracks, prompt b and c info extended to all prompt partons
number of PU events in BX=0 now correctly obtained even if the detailed PU info has not been filled during the sample production
Merge pull request #1 from cms-btv-pog/5_3_X

Updated BTagAnalyzer